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Finding the Third Proportional to 642,858 and 1,227,372

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Solution

The third proportional to 642,858 and 1,227,372 is: 2,343,351.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,858 : 1,227,372 = 1,227,372 : x
  2. Step 2: Convert to fraction form
    642,858/1,227,372 = 1,227,372/x
  3. Step 3: Cross multiply
    642,858x = 1,227,372 × 1,227,372
  4. Step 4: Simplify right side
    642,858x = 1,506,442,026,384
  5. Step 5: Solve for x
    x = 1,506,442,026,384/642,858
  6. Step 6: Final answer
    x = 2,343,351.14

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.